Blower



0. D. H. BENTLEY March 14, 1939.

BLOWER Filed April 8, 1938 B1 0677 601' OLIVE/2 0 H. BENTLEY attorneyPatented Mar. 14, 1939 Y 2 1 UNITED STATES PATENT QFIQE BLOWER 7 OliverD'. H. Bentley, Norfolk, Mass. Application April 8, 1938, Serial No.200,933

3 Claims. (01. 230-116) This invention relates to blowers and relatesturbine is mounted on the rotary shaft Ill adjacent more particularly toturbine driven blowers the lower end thereof. assembled as units.Mounted on the upper end of the shaft I9 is the On naval vessels, forexample, such as destroyblower hub i I on which are formed the propeller5- ers, it has been the practice in the past, in providblades i 2. Thehub l l is streamlined for the 5 ing forced draft for the boilerfurnaces, to draw in efiicient flow of air. Theshaft H3 is journaled toatmospheric air through deck ventilators andto revolve in the sleevebearings I l; The inner ends force it under considerable pressure intothe boiler of the brace arms i5 are attached to the journal l6 rooms.This is no longer desirable for the reason of the bearings l4 and theirouter ends are 10 that it is expected that in future naval engageclampedaround the rods 8. 10 ments, poison gas bombs will be dropped by hostileThe inner casing ll extends around the greater air-craft, and the formerpractice in providing portion of the journal l6 and around substanforceddraft wouldresult in the poison gases being tially the entire portion ofthe shaft Which is forced b the blowers, into the boiler rooms to rp t hir stream m v y the ade 12. affect the engineers and other attendants.The b l and Casing are e ed to CO0Der- 15 The present invention providesa deck support d ate in providing a stream-lined enclosure for theturbine driven blower, the outlet of which may be shaft and the journale casing I1 s connected directly to a boiler so that the airsupsupported on h a 15 which t nd t r u h plied by the blower cannotescape into the boiler room. This is accomplished by an eflicient, com-The assembly s also provided w h upp 20 pact design which enables tdevice to fit in casing 3 which provides vertically downward airadvantageously it t slight departure fr flow through the blower and theouter casing 18 existing boiler room design practices. which forms anelbow type p e below the An object of this invention is to provide adeck journal l6 and between it and the turbine l. The supported, forceddraft blower, the outlet of which casings 3 and are bolted together aThe 5 may be connected to a boiler casing lower portion of the casing I8has the flange por- Another object of the invention is to provide a tionIQ for attachment to a boiler casing. The

turbine driven blower with a flexible shaft becasing turns the airthrough an angle of tween the blower and turbine for turning thestantlally 90 and enables the air to be supplied to delivered by theb10wer the boiler in a path avoiding the turbine l.

Other objects of the invention will be apparent In P for the casing isto provide an afiefrom the following description taken together quatealr passage between the blower and turbine with the drawing the shaft I0is made relatively long and its portion The invention will now bedescribed with referbetween.the Journal and t upper portion of ence tothe drawing of which: the turbine 8 has a reduced dlameter to provide a35 Fig. l is a side View with a portion in section of degre-e ofresll-lency to compensate for any Slight one embodiment of a turbinedriven deck misalignment in the assembly and to simplify the bearingdesign. This form of shaft is known as a ported blower according to thisinvention, and

Fig. 2 is a plan view looking downwardly in quill 40 reduced Scale ofthe blower of Fig 1 While one embodiment of the invention has 40 beendescribed for the purpose of illustration, it The blower and turbine areassembled as a unit nd r d t d t b t d d h should be understood that theinvention is not a 1 6 i W1 nve S aft limited to the exact apparatus andarrangement Ver 10a 5 Own Y euppel end of the of apparatus described, asmany departures may assemmy adapted to be bolfied to t deck plates besuggested by those skilled in the art, without 45 of a ship as by thebolts 5, mm the 1nlet passage 6 departing from the Spirit of theinvention of the blower in alignment with an opening in the What isclaimed deck- 1. A blower assembly adapted to be supported The turb ne ncate generally by the numeral from the deck of a marine vessel,comprising a is of sta da d design and Will not be describedsubstantially vertical shaft, a blower mounted on 50 In detailsaid shaftadjacent the upper end thereof, a motor The turbin I is s pp f the deckof the adjacent the lower end of said shaft and having ship by means ofthe tubes 8 which are bolted to t rotor t d on s id haft, p1ura1ity ofthe deck o he s p by he b l 5 a 0 he turvertical supporting members,each attached at one blue assembly by the bolts 9. The rotor I3 of theend to said motor and adapted to be attached at 55 the other end to saiddeck, a bearing around said shaft adjacent said blower, means forsupporting said bearing from said members, and an air guiding casingsupported from said members, said casing having an upper cylindricalportion and a lower elbow type portion between said blower and saidmotor shaped to turn the air from said upper portion through asubstantial angle, the portion of said shaft between said bearing andsaid motor having a reduced diameter for providing resiliency tocompensate for any misalignment in said assembly.

2. A blower assembly adapted to be supported from the deck of a marinevessel, comprising a substantially vertical shaft, a blower mounted onsaid shaft adjacent the upper end thereof, a motor adjacent the lowerend of said shaft and having 7 its rotor mounted on said shaft, aplurality of vertical supporting members, each attached at one end tosaid motor and adapted to be supported at the other end from said deck,a bearing around said shaft adjacent said blower, means for supportingsaid bearing from said members, and an air guiding casing supportedbetween said members, said casing having an upper cylindrical portionand a lower elbow type portion between said blower and said motor shapedto turn the air from said upper portion through a substantial angle, theportion of said shaft between said bearing and said motor having areduced diameter for provid ing resiliency to compensate for anymisalignment in said assembly.

3. A blower assembly adapted to be supported from the deck of a marinevessel, comprising a substantially vertical shaft, a blower mounted onsaid shaft adjacent the upper end thereof, a motor adjacent the lowerend of said shaft and having its rotor mounted on said shaft, aplurality of vertical supporting members, each attached at one end tosaid motor and adapted to be supported at the other end from said deck,a bearing around said shaft adjacent said blower, means for supportingsaid bearing from said members, an air guiding casing supported betweensaid members, said casing having an upper cylindrical portion and alower elbow type portion between said blower and said motor shaped toturn the air from said upper portion through a substantial angle, astreamlining casing around said bearing below said blower and said shaftwithin and spaced from said air guiding casing, and means for supportingsaid stream-lining casing from said members, the portion of said shaftbetween said bearing and said motor having a reduced diameter forproviding resiliency to compensate for any misalignment in saidassembly.

OLIVER D. H. BENTLEY.

